Civil and Environmental Engineering: Recent submissions
Now showing items 201-220 of 851
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Disruption factor of asphalt mixtures
( Taylor & Francis , 2012 , Article)Typically, aggregate gradation is selected to meet Superpave mix design specification; however, many Superpave mixtures have exhibited deficient field performance. The porosity of the dominant aggregate size range (DASR), ... -
Performance evaluation of full-scale sections of asphalt pavements in the State of Qatar
( American Society of Civil Engineers (ASCE) , 2014 , Article)The population and economy in the State of Qatar have been increasing in the past 5 years. Accordingly, traffic loading has also increased rapidly, which affected the performance of existing roads and highways. This high ... -
State-of-the-art review on sustainable design and construction of quieter pavements-Part 1: Traffic noise measurement and abatement techniques
( Multidisciplinary Digital Publishing Institute (MDPI) , 2016 , Article)Noise pollution due to highway traffic has drawn the attention of transportation agencies worldwide. Noise pollution is an irritant to residents, especially in urban areas near roads with high traffic volume. In addition ... -
State of the Art Study on Aging of Asphalt Mixtures and Use of Antioxidant Additives
( Hindawi , 2018 , Article)The detrimental effects of hardening in asphalt pavements were first recognized by pioneering pavement engineers in the 1900s and have been studied extensively during the last 70 years. This hardening process, referred to ... -
Application of Tools of Quality Function Deployment and Modified Balanced Scorecard for Optimal Allocation of Pavement Management Resources
( Institute of Electrical and Electronics Engineers Inc. (IEEE) , 2020 , Article)Pavement management is a set of tools used to evaluate and maintain pavements so that the pavements can be used safely and effectively over a certain period. Many traditional methods were and are still being used by entities ... -
Comprehensive evaluation of long-term aging of asphalt mixtures in hot climatic condition
( Taylor & Francis , 2018 , Article)Aging is an inevitable phenomenon in hot mix asphalt production and during in-service period of flexible pavement operation. This paper presents an experimental evaluation of long-term aging of asphalt mixtures in Qatar. ... -
A framework for the analysis of damage and recovery characteristics of asphalt mixtures
( Taylor & Francis , 2020 , Article)This study presents two approaches for evaluating damage and recovery characteristics of asphalt mixtures. The first approach focuses on determining damage by extracting recoverable viscoelastic strain that has no damage ... -
Influence of temperature on tire-pavement noise in hot climates: Qatar case
( Elsevier , 2021 , Article)The ambient air temperature greatly influences tire-pavement noise measurements. Therefore, various international standards recommended a temperature correction factor to compensate for noise measurements at varying ... -
Acoustic Performance Evaluation of Dense-Graded Asphalt Pavements in Qatar
( Hindawi , 2021 , Article)There is pressing and growing demand from the public to design and construct roads with a low noise level. This paper investigated the acoustic performance of asphalt pavements in the State of Qatar to assist transport ... -
Rheological, Thermal, and Chemical Evaluation of Asphalt Binders Modified Using Crumb Rubber and Warm-Mix Additive
( American Society of Civil Engineers (ASCE) , 2022 , Article)This study evaluates the potential of producing warm-mix asphalt (WMA) using a wax-based additive (Sasobit) in a binder modified using crumb rubber (CR). This binder is formulated for very hot climates and has a grade of ... -
Comparative Characterization of Field and Laboratory-Aged Binders Modified with Antioxidant Additives and Copolymers Using Fourier Transform Infrared Spectroscopy and Gel Permeation Chromatography
( American Society of Civil Engineers (ASCE) , 2022 , Article)This study investigates the behavior of antioxidant additives and copolymers to an asphalt binder by comparing laboratory-aged (up to 60 h) and antioxidant-modified binders with binders extracted from field cores. To ... -
Assessment of Pavement Performance Management Indicators Through Analytic Network Process
( Institute of Electrical and Electronics Engineers Inc. (IEEE) , 2022 , Article)Pavement industry is very critical for any public authority looking after the safety and comfort of its citizens because it is the backbone of many transportation networks. Studying the factors that affect the pavement ... -
Evaluation and calibration of dynamic modulus prediction models of asphalt mixtures for hot climates: Qatar as a case study
( Elsevier , 2022 , Article)The dynamic modulus (|E*|) of asphalt mixtures is one of the most important inputs in Mechanistic-Empirical (ME) pavement analysis and design. Several models have been developed to predict the dynamic modulus based on ... -
Impact of Aging on the Microstructure of Asphalt Binder Modified with Antioxidant Additives and Copolymers
( Chinese Society of Pavement Engineering , 2023 , Article)The effect of long-term aging on asphalt binders mixed with antioxidant additives and copolymers demonstrated potential for retarding oxidative aging at the nanoscale based on atomic force microscopy (AFM) characterization. ... -
An Approach for Adjusting the Laboratory-Determined Dynamic Modulus Master Curve of Asphalt Layers Based on Falling Weight Deflectometer Measurements
( Hindawi , 2023 , Article)Structural assessment is critical for designing asphalt pavement overlays, estimating the remaining life of pavements, and selecting an appropriate rehabilitation strategy for existing pavements. The falling weight ... -
Assessment of Critical Project Success Factors for Management of Pavement Construction Using the Delphi Approach
( American Society of Civil Engineers (ASCE) , 2024 , Article)Construction project management is typically adopted in modern civil landscapes. Owing to the significant global increase in infrastructure investments, it is crucial to analyze the success and timely completion of such ... -
Aquaculture from inland fish cultivation to wastewater treatment: a review
( Springer Nature , 2023 , Article)The aquaculture industry is rapidly developing, generating a high amount of wastewater. Inland aquaculture effluents contain nutrients and other substances that can cause eutrophication and the emergence of resistive ... -
Microalgae: A potential bioagent for treatment of emerging contaminants from domestic wastewater
( Elsevier , 2024 , Article)Water crisis around the world leads to a growing interest in emerging contaminants (ECs) that can affect human health and the environment. Research showed that thousands of compounds from domestic consumers, such as endocrine ... -
Operation failure of risk analysis on floating storage and offloading
( IOP Publishing , 2023 , Conference Paper)The need for petroleum in daily life is increasing. The oil comes from the seabed, so it is necessary to have adequate facilities during the exploration and exploitation of crude oil. The process of distributing crude oil ... -
Safety Analysis of Merging Vehicles Based on the Speed Difference between on-Ramp and Following Mainstream Vehicles Using NGSIM Data
( Multidisciplinary Digital Publishing Institute (MDPI) , 2022 , Article)Highway merging points are critical elements due to the interactions between merging vehicles and following vehicles on the outermost lane of the highway stream. Such interactions could have significant implications for ...
